package com.day09;
/*

 */
public class ValueTransferTest2 {
    public static void main(String[] args) {
        Data data = new Data();
        data.m = 10;
        data.n = 20;
        System.out.println("m ="+ data.m + ",n = "+ data.n);

        //交换m和n的值
//        int temp = data.m;
//        data.m = data.n;
//        data.n = temp;

        ValueTransferTest2 test = new ValueTransferTest2();
        test.swap(data);

        System.out.println("m ="+ data.m + ",n = "+ data.n);
    }
    public void swap(Data data){
        int temp = data.m;
        data.m = data.n;
        data.n = temp;
    }
}

class Data{
    int m;
    int n;
}